For that feeling of well being! the b-vitamin complex is made up of several b vitamins that work well together to support nervous system health.** this product combines vitamins b-1 (thiamin), b-2 (riboflavin), b-3 (niacin), and b-12, from natural sources. b-complex vitamins are involved in energy metabolism and help maintain the health of nerves and heart health.** the vitamin b-12 helps in the normal formation of red blood cells.**dose: 1 tablet one to two times daily, preferably with meals.